Air environment detection device for ecological monitoring

Abstract

The invention discloses an air environment detection device for ecological monitoring, and belongs to the technical field of air environment detection.The air environment detection device comprises a separation box, a fixed sampling pipe and a flue gas probe connected with the fixed sampling pipe, the bottom end of the separation box is conical, a dust discharging pipe is arranged at the bottom end of the separation box, and an atomization pipe is fixedly connected to the center of the separation box; a plurality of atomization holes are formed in the side wall of the atomization pipe, and the top end of the atomization pipe is communicated with a conical hollow base. By arranging the spiral guide vane and the atomizing pipe, smoke spirally moves downwards through the spiral guide vane, large particles in the smoke generate large centrifugal force, meanwhile, under the action of water mist sprayed out of the atomizing pipe, small and medium particles in the smoke are gathered to form large particles, and the large particles are thrown to the inner wall of the centrifugal box; meanwhile, soluble particulate matters in the flue gas can be dissolved by the water mist, so that the soluble particulate matters and insoluble particulate matters in the flue gas are separately collected, the blockage phenomenon is avoided, and the flue gas collection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air environment detection, and in particular to an air environment detection device for ecological monitoring. Background Art

[0002] Flue gas monitoring can accurately understand the types, concentrations and total emissions of pollutants by continuously and in real time monitoring the pollutants in the flue gas, provide a basis for decision-making for environmental protection departments, and help formulate corresponding environmental protection policies and measures.

[0003] Existing flue gas monitoring uses a flue gas sampling tube that extends through a sampling port on the chimney side wall into the chimney. The flue gas sample is then transmitted to a flue gas probe. The filter membrane structure in the flue gas probe filters harmful particulate matter in the flue gas and then transmits it to the analysis instrument. The existing filter membrane structure is prone to clogging when filtering particulate matter in the flue gas, resulting in forced interruption of flue gas sampling. In addition, when the sampling tube is sampling inside the chimney, in order to ensure uniform distribution of flue gas at the flue gas sampling point, the sampling point is generally selected at the vertical section of the chimney. However, the flue gas distribution at the vertical section is not uniform. Affected by various factors, this leads to the fact that in addition to the uniform distribution state, the flue gas may also have uneven states such as eddy currents during the sampling process. The uneven flue gas will lead to uneven distribution of pollutant concentrations in the flue gas, which may cause some of the collected samples to be unable to accurately reflect the overall situation. Therefore, an air environment detection device for ecological monitoring is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the filter membrane structure in the flue gas probe is prone to clogging when filtering particulate matter in the flue gas, and the flue gas distribution in the vertical section is not absolutely uniform, resulting in insufficient representativeness of the sampled flue gas. An air environment detection device for ecological monitoring is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The top of the atomizing tube is connected with a conical hollow seat, and the interior of the atomizing tube is provided with an exhaust pipe, and the top of the atomizing tube is connected with a conical hollow seat. An exhaust pipe is provided inside the atomizing tube, and the top of the exhaust pipe passes through the conical hollow seat. The bottom end of the exhaust pipe is fixedly connected with an air collecting hopper, and the side wall of the air collecting hopper is fixedly connected to the inner wall of the atomizing tube. A water pump is installed on the top of the separation box, and one end of the water pump is connected to the conical hollow seat through a water inlet pipe. A spiral guide blade is fixedly connected to the surface of the atomizing tube, and the edge of the spiral guide blade is tightly fitted with the inner wall of the separation box. The outer wall of the separation box is fixedly connected with a supporting disk. A recovery shell is provided below the separation box, the top of the recovery shell is connected to the support disc by bolts and nuts, the inner bottom end of the recovery shell is rotatably connected to the guide base, the top of the guide base is fixedly connected to the centrifugal box, the top of the centrifugal box is provided with a circular opening, the dust exhaust pipe is plugged into the circular opening, and a microporous filter membrane is provided on the circumference of the side wall of the centrifugal box; One end of the fixed sampling tube is fixedly connected to a soft sampling tube, and one end of the soft sampling tube is fixedly connected to a changeable sampling tube. The side wall of the fixed sampling tube is connected to the changeable sampling tube through a changeable assembly. A plurality of articulated arms are provided on the circumference of the side wall of the changeable sampling tube. A storage frame is rotatably provided at one end of the articulated arm. The plurality of storage frames are commonly connected to the same inflation airbag, and a storage motor connected to the storage frame is installed on the side wall of the articulated arm.

[0006] Preferably, an air inlet is provided on the side wall of the separation box near the top, the air inlet is connected to a gas pipe, and the gas pipe is connected to a smoke probe.

[0007] Preferably, a centrifugal motor is installed at the bottom end of the recovery shell, and the output end of the centrifugal motor is fixedly connected to the bottom end of the guide base through a drive shaft.

[0008] Preferably, aligned honeycomb holes are provided on the front and back sides of the inflatable airbag, and an air hose connected to the honeycomb holes is fixedly connected to the inner wall of the inflatable airbag.

[0009] Preferably, an air collecting hood in communication with the honeycomb holes is fixedly connected to the back of the expansion airbag, and the air collecting hood is in communication with the direction-changing sampling tube through an elastic collecting tube.

[0010] Preferably, a micro air pump is installed on the surface of the storage frame, and the micro air pump is connected to the expansion air bag through an air tube.

[0011] Preferably, the direction-changing assembly includes a support plate fixedly connected to the side wall of the fixed sampling tube, one end of the support plate is rotatably connected to a steering plate, and the side wall of the support plate is equipped with a direction-changing motor connected to the steering plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In this scheme, spiral guide blades and atomizing pipes are provided. The spiral guide blades are used to make the flue gas spiral downward, so that large particles in the flue gas generate greater centrifugal force. At the same time, under the action of the water mist sprayed from the atomizing pipe, small particles in the flue gas gather to form large particles and are thrown to the inner wall of the centrifugal box. At the same time, the water mist can dissolve the soluble particles in the flue gas, so that the soluble particles and insoluble particles in the flue gas are collected separately, while avoiding blockage and improving the flue gas collection efficiency.

[0013] 2. In this solution, by providing an expansion airbag, a fixed collection tube, a soft collection tube and a change-direction collection tube, the expansion airbag can form a disc-shaped honeycomb plate inside the chimney. After the vortex-shaped and other uneven flue gas passes through the honeycomb plate, it will become evenly distributed, and then, with the cooperation of the fixed collection tube, the soft collection tube and the change-direction collection tube, it will be transported to the flue gas probe, ensuring that all flue gas samples taken can accurately reflect the overall situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of an air environment detection device for ecological monitoring proposed by the present invention; Figure 2 This is a schematic diagram of the assembly structure of the separation box and the recovery shell in an air environment detection device for ecological monitoring proposed by the present invention; Figure 3 This is a schematic cross-sectional view of the atomizing pipe and exhaust pipe in an air environment detection device for ecological monitoring proposed by the present invention; Figure 4 This is a schematic structural diagram of an inflatable airbag deployed in an air environment detection device for ecological monitoring proposed by the present invention; Figure 5 This is a schematic diagram of the internal structure of an inflatable airbag in an air environment detection device for ecological monitoring proposed by the present invention; Figure 6 This is a schematic cross-sectional view of the inflatable airbag in an air environment detection device for ecological monitoring proposed by the present invention.

[0015] In the figure: 1. Recovery shell; 2. Separation box; 3. Flue gas probe; 4. Fixed sampling tube; 401. Soft sampling tube; 402. Reversible sampling tube; 5. Inflatable air bag; 6. Gas collecting hood; 7. Storage frame; 8. Support disc; 9. Water pump; 10. Exhaust pipe; 11. Conical hollow seat; 12. Spiral guide blade; 13. Centrifugal box; 14. Microporous filter membrane; 15. Guide base; 16. Centrifugal motor; 17. Atomizing tube; 18. Gas collecting hopper; 19. Articulated arm; 20. Air hose; 21. Micro air pump; 22. Storage motor; 23. Elastic collection tube; 24. Support plate; 25. Reversible motor; 26. Steering plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0019] Example, see Figures 1 to 6, an air environment detection device for ecological monitoring, comprising a separation box 2, a fixed sampling tube 4 and a flue gas probe 3 connected to the fixed sampling tube 4 (the flue gas probe 3 is a prior art, which has functions such as flue gas sample collection, and its specific working principle is not repeated here. The flue gas probe 3 in this patent does not have a membrane filtration structure compared to the probe in the prior art). The bottom end of the separation box 2 is conical and a dust exhaust pipe is provided at the bottom end. An atomization pipe 17 is fixedly connected to the center of the separation box 2. A plurality of atomization holes are provided on the side wall of the atomization pipe 17. A conical hollow seat 11 is provided at the top of the atomization pipe 17. An exhaust pipe 10 is provided inside the atomization pipe 17 (the exhaust pipe 10 is connected to an external analysis instrument ), the top of the exhaust pipe 10 is provided through the conical hollow seat 11, the bottom end of the exhaust pipe 10 is fixedly connected to an air collecting hopper 18, the side wall of the air collecting hopper 18 is fixedly connected to the inner wall of the atomizing tube 17, and a water pump 9 is installed on the top of the separation box 2. One end of the water pump 9 is connected to the conical hollow seat 11 through a water inlet pipe, and the other end of the water pump 9 is connected to an external water tank. The surface of the atomizing tube 17 is fixedly connected with a spiral guide blade 12, and the edge of the spiral guide blade 12 is tightly fitted with the inner wall of the separation box 2. The outer wall of the separation box 2 is fixedly connected with a support disc 8. Furthermore, an air inlet is provided near the top of the side wall of the separation box 2, and the air inlet is connected to an air supply pipe, which is connected to the flue gas probe 3; It should be noted that after being collected by the flue gas probe 3, the flue gas is transported to the inside of the separation box 2 through the air pipe, and the flue gas flows along the spiral guide blades 12. When the flue gas moves downward in a spiral manner, it will generate a large centrifugal force, so that the large particles in the flue gas are thrown to the inner wall of the separation box 2 under the action of centrifugal force. At the same time, the water in the external water tank is transported to the inside of the atomization pipe 17 by the water pump 9. The water inside the atomization pipe 17 is sprayed and atomized through the atomization hole. The sprayed water mist will combine with the small particles in the chimney, so that the small particles are aggregated into large particles, and then they can be thrown to the inner wall of the separation box 2 under the action of centrifugal force, thereby realizing the separation function of the particles in the flue gas. The separated particles are transported to the inside of the centrifugal box 13 under the action of their own gravity and the push of the airflow. At the same time, the water mist will dissolve the soluble particles in the chimney, and the resulting solution will also flow to the inside of the centrifugal box 13 along the spiral guide blades.

[0020] Furthermore, a centrifugal motor 16 is installed at the bottom end of the recovery shell 1, and the output end of the centrifugal motor 16 is fixedly connected to the bottom end of the guide base 15 through a drive shaft. A recovery shell 1 is provided below the separation box 2, and the top of the recovery shell 1 is connected to the support disc 8 through bolts and nuts. The inner bottom end of the recovery shell 1 is rotatably connected to the guide base 15, and the top of the guide base 15 is fixedly connected to the centrifugal box 13. The top of the centrifugal box 13 is provided with a circular opening, and the dust exhaust pipe is plugged into the circular opening. The circumference of the side wall of the centrifugal box 13 is provided with a microporous filter membrane 14; It should be noted that: the centrifugal motor 16 drives the diversion base 15 to rotate, the diversion base 15 drives the centrifugal box 13 to rotate, and the centrifugal box 13 drives the particles and solution inside it to rotate. Under the action of centrifugal force, the moisture in the particles and the solution containing soluble particles dissolved in the inside of the centrifugal box 13 can pass through the microporous filter membrane 14 and enter the recovery shell 1, thereby realizing the drying function of the particles and realizing the separate collection function of the soluble particles and insoluble particles in the flue gas, while avoiding blockage and ensuring the normal flue gas sampling.

[0021] One end of the fixed sampling tube 4 is fixedly connected to the soft sampling tube 401, and one end of the soft sampling tube 401 is fixedly connected to the changing sampling tube 402. The side wall of the fixed sampling tube 4 is connected to the changing sampling tube 402 through a changing assembly. Furthermore, the changing assembly includes a support plate 24 fixedly connected to the side wall of the fixed sampling tube 4, one end of the support plate 24 is rotatably connected to the steering plate 26, and the side wall of the support plate 24 is installed with a changing motor 25 connected to the steering plate 26.

[0022] It should be noted that: the direction-changing motor 25 drives the steering plate 26 to rotate, and the steering plate 26 drives the direction-changing sampling tube 402 to rotate, so that the horizontal direction-changing sampling tube 402 becomes a vertical state, so that the expansion airbag 5 can face the flue gas, making it easier for the expansion airbag 5 to change the vortex-shaped and other uneven flue gas into a uniform distribution, thereby ensuring that all flue gas samples taken can accurately reflect the overall situation.

[0023] The side wall circumference of the changing direction sampling tube 402 is provided with multiple articulated arms 19, and a storage skeleton 7 is rotatably provided at one end of the articulated arm 19. The multiple storage skeletons 7 are commonly connected to the same expansion airbag 5. The side wall of the articulated arm 19 is installed with a storage motor 22 connected to the storage skeleton 7. The front and back of the expansion airbag 5 are provided with aligned honeycomb holes. The inner wall of the expansion airbag 5 is fixedly connected to an air hose 20 connected to the honeycomb hole. The back of the expansion airbag 5 is fixedly connected to an air collecting hood 6 connected to the honeycomb hole. The air collecting hood 6 is connected to the changing direction sampling tube 402 through an elastic collecting tube 23. A micro air pump 21 is installed on the surface of the storage skeleton 7, and the micro air pump 21 is connected to the expansion airbag 5 through an air pipe.

[0024] It should be noted that the micro air pump 21 is a prior art and has two functions of pumping and suction. Its specific working principle will not be described in detail here.

[0025] It should be noted that: the storage motor 22 is used to drive the storage frame 7 to rotate, so that the deflated storage state of the expansion airbag 5 is expanded into a circular shape, and then the micro air pump 21 is used to pump air into the expansion airbag 5, so that the expansion airbag 5 expands to form a honeycomb panel. The honeycomb panel can make the uneven smoke such as the vortex inside the chimney evenly distributed.

[0026] It is worth noting that the soft sampling tube 401, the elastic collecting tube 23, the expansion airbag 5 and the gas collecting cover 6 are made of uniform high temperature resistant and corrosion resistant rubber material.

[0027] When the present invention is used, the fixed sampling tube 4, the soft sampling tube 401, the changeable sampling tube 402 and the expansion airbag 5 are inserted into the chimney through the sampling port on the side wall of the chimney. Then, the storage motor 22 is controlled by an external controller to operate, and the storage motor 22 drives the storage frame 7 to rotate, so that the expansion airbag 5 in the deflated storage state is expanded into a circular shape. Then, the micro air pump 21 is used to pump air into the expansion airbag 5, so that the expansion airbag 5 expands to form a honeycomb panel (the area of ​​the honeycomb panel is much smaller than the cross-sectional area of ​​the chimney to ensure that the honeycomb panel can rotate). Then, the changeable motor 25 is controlled by an external controller to operate, and the changeable motor 25 drives the steering plate 26 to rotate, so that the horizontal changeable sampling tube 402 becomes vertical (at this time, the soft sampling tube 401 is bent 90°), thereby causing the honeycomb panel formed by the expansion airbag 5 to rotate 90° so that the honeycomb panel can face the smoke inside the chimney.

[0028] When the vortex-shaped and uneven flue gas inside the chimney passes through the honeycomb panel formed by the expansion airbag 5, it can be evenly distributed. The flue gas that has passed through the honeycomb panel and become evenly distributed will enter the gas collecting hood 6, and then enter the reversing sampling tube 402 through the elastic collection tube 23, and then enter the fixed sampling tube 4 through the soft sampling tube 401, and finally enter the flue gas probe 3 through the fixed sampling tube 4. The flue gas probe 3 then transports the collected flue gas to the separation box 2, thereby ensuring that all flue gas samples can accurately reflect the overall situation. The flue gas entering the separation box 2 will flow along the spiral guide blades 12. When the flue gas moves downward in a spiral manner, it will generate a large centrifugal force, so that the large particles in the flue gas will be thrown to the inner wall of the separation box 2 under the action of the centrifugal force. At the same time, the water in the external water tank is transported to the inside of the atomizing pipe 17 by the water pump 9. The water inside the atomizing pipe 17 is sprayed and atomized through the atomizing hole. The sprayed water mist will combine with the small particles in the chimney, so that the small particles are aggregated into large particles, and then they can be thrown to the inner wall of the separation box 2 under the action of centrifugal force, thereby realizing the separation function of the particles in the flue gas. The separated particles are transported to the inside of the centrifugal box 13 under the action of their own gravity and the push of the airflow. At the same time, the water mist will dissolve the soluble particles in the chimney, and the resulting solution will also flow to the inside of the centrifugal box 13 along the spiral guide vanes. At the same time, the flue gas will enter the exhaust pipe 10 through the gas collecting hopper 18, and then enter the analysis instrument; Then, under the action of the centrifugal motor 16, the guide base 15 is driven to rotate at a high speed, and the guide base 15 drives the centrifugal box 13 to rotate, and the centrifugal box 13 drives the particles and solution inside it to rotate. Under the action of centrifugal force, the water in the particles and the solution containing soluble particles dissolved in the centrifugal box 13 can pass through the microporous filter membrane 14 into the recovery shell 1, thereby achieving the function of drying the particles and realizing the function of separately collecting the soluble particles and insoluble particles in the flue gas, while avoiding blockage, ensuring the normal operation of flue gas sampling, and improving the efficiency of flue gas collection; Finally, the bolts and nuts are removed, and the recovery shell 1 can be removed, so that the recovered soluble particles and insoluble particles can be recovered separately for further analysis.

[0029] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An air environment detection device for ecological monitoring, comprising a separation box (2), a fixed sampling tube (4), and a flue gas probe (3) connected to the fixed sampling tube (4), characterized in that: The bottom end of the separation box (2) is conical and is provided with a dust exhaust pipe. The center of the separation box (2) is fixedly connected to an atomizing pipe (17). The side wall of the atomizing pipe (17) is provided with a plurality of atomizing holes. The top end of the atomizing pipe (17) is connected to a conical hollow seat (11). An exhaust pipe (10) is provided inside the atomizing pipe (17). The top end of the exhaust pipe (10) passes through the conical hollow seat (11). The bottom end of the exhaust pipe (10) is fixedly connected to a collecting pipe (11). An air hopper (18), the side wall of the air collecting hopper (18) is fixedly connected to the inner wall of the atomizing tube (17), a water pump (9) is installed on the top of the separation box (2), one end of the water pump (9) is connected to the conical hollow seat (11) through a water inlet pipe, a spiral guide blade (12) is fixedly connected to the surface of the atomizing tube (17), the edge of the spiral guide blade (12) is tightly fitted with the inner wall of the separation box (2), and the outer wall of the separation box (2) is fixedly connected to a support disc (8); A recovery shell (1) is provided below the separation box (2), the top of the recovery shell (1) is connected to the support disc (8) via bolts and nuts, the inner bottom end of the recovery shell (1) is rotatably connected to a flow guide base (15), the top of the flow guide base (15) is fixedly connected to a centrifugal box (13), the top of the centrifugal box (13) is provided with a circular opening, the dust exhaust pipe is plugged into the circular opening, and a microporous filter membrane (14) is provided on the circumference of the side wall of the centrifugal box (13); One end of the fixed sampling tube (4) is fixedly connected to a soft sampling tube (401), and one end of the soft sampling tube (401) is fixedly connected to a changeable sampling tube (402). The side wall of the fixed sampling tube (4) is connected to the changeable sampling tube (402) via a changeable assembly. A plurality of articulated arms (19) are provided around the side wall of the changeable sampling tube (402). A storage frame (7) is rotatably provided at one end of the articulated arm (19). The plurality of storage frames (7) are commonly connected to the same expansion airbag (5). A storage motor (22) connected to the storage frame (7) is installed on the side wall of the articulated arm (19).

2. The air environment detection device for ecological monitoring according to claim 1, characterized in that: An air inlet is provided on the side wall of the separation box (2) near the top, and an air supply pipe is connected to the air inlet, and the air supply pipe is connected to the smoke probe (3).

3. The air environment detection device for ecological monitoring according to claim 1, characterized in that: A centrifugal motor (16) is installed at the bottom end of the recovery housing (1), and the output end of the centrifugal motor (16) is fixedly connected to the bottom end of the guide base (15) via a drive shaft.

4. The air environment detection device for ecological monitoring according to claim 1, characterized in that: Aligned honeycomb holes are provided on the front and back sides of the expansion airbag (5), and an air hose (20) connected to the honeycomb holes is fixedly connected to the inner wall of the expansion airbag (5).

5. The air environment detection device for ecological monitoring according to claim 4, characterized in that: The back of the expansion airbag (5) is fixedly connected to an air collecting hood (6) in communication with the honeycomb holes, and the air collecting hood (6) is in communication with the direction-changing sampling tube (402) via an elastic collecting tube (23).

6. The air environment detection device for ecological monitoring according to claim 5, characterized in that: A micro air pump (21) is installed on the surface of the storage frame (7), and the micro air pump (21) is connected to the expansion air bag (5) through an air tube.

7. The air environment detection device for ecological monitoring according to claim 1, characterized in that: The direction-changing assembly comprises a support plate (24) fixedly connected to the side wall of the fixed sampling tube (4), one end of the support plate (24) is rotatably connected to a steering plate (26), and a direction-changing motor (25) connected to the steering plate (26) is installed on the side wall of the support plate (24).

Images